Mining machine



Nov. 8, 1927.

F. CARTLIDGE MINING MACHINE 6 7 8 4 6.. 1 E G m L T R A C E 7. 2 9 1 &.

Nov.

MIING MACHINE original Filed June 1o, 1918 3 Sheets-Sheet 2 Nov. 8, 1927. 1,648,876

F. CARTLIDGE.

MINING MACHINE Original Filed une 10I 1918 3 Sheets-Sheet 3 Patented Nov. 8, 1927.

UNITED STATES 1,648,876 PATENT OFFICE.

FRANK CARTLIDGE, OF CLABEMONT, NEW HAMPSHIRE, ASSIGNOR TO SULLIVAN HA- CHINERY COMPANY, A CORPORATION OF MASSACHUSETTS.

MINING MACHINE.

Application filed June 10, 1918, Serial No. 239,269. Renewed September 18, 1925.

This invention relates to mining machines, and more particularly, although not exclusively, to shearing machines, i. e., to machines or cutting vertical kerfs in a mine wall or ace.

The invention has for an object to provide an improved truck mounted machine of this character. A further object of the invention is to provide an improved machine adapted to operate upon a mine face extending transverse to the trackway upon which the machine travels, as in entry driving, or upon a face extending substantially parallel to said trackway, and at either side thereof, as in opening room necks; said machine being capable of producing a cut in any desired vertical plane, and comprising improved means for guiding the cutting mechanism into close proximity to the face to be cut, irrespective of the distance (within limits) of said face from the trackway, together with improved means for securely supporting the parts during the cutting operation.

The foreging and other objects of the invention, together with means whereby the same may be carried into effect, will best be understood from the following description of one form or embodiment thereof illustrated in the accompanying drawings.

In said drawings,- A

Fig. 1 is a side elevation, and Fig. 2 a plan view, of the complete machine.

Fig. 3 is an enlarged plan view2 partly broken away, of the cutting mechanism.

Figs. 4 and 5 are detail sections on the lines 4 4 and 5 5, respectively, Fig. 3.

Fig. 6 is an elevation on a reduced scale, illustrating the operation of the machine in entry driving.

Fig. 7 is a plan view on a reduced scale, illustrating the position of the machine when operating upon a face parallel to the trackwav, as in opening a room neck.

Fig. 8 is a view similar to Fig. 7, showing the parts adjusted to cause the cutting meollanism to cut at the opposite side of the machine.

The truck upon which the machine is transported comprises a pair of parallel ways 1f) connected at their rear ends by a transverse brace 18 and mounted on wheels 11 adapted to run upon the usual trackway,12. As herein shown, said truck is of the selfpropelled type, being driven by an electric or other motor 13 provided with a suitable controller 14 and connected by a sprocket chain 15 with the axle of the rear wheels 11.

Guided for movement longitudinally of the truck in the ways 10 is a slide 16, said slide being movable in said ways by means of a screw 17 in threaded engagement with said slide and journaled in the brace 18. Pivoted at one end at 19 to the slide 16, for movement transversely of the machine in a horizontal plane, is a supporting arm 20. Upon the opposite end of the arm 20 is mounted, for angular movement about a pivot 21, a guide or frame 22 provided with a pair of parallel, horizontally disposed ways 23 in which the cutting mechanism is mounted for movement longitudinally of said guide.

The cutting mechanism comprises a complete mining machine including a casing 24 containing the operating mechanism, and a cutter bar 25 carrying the usual cutter chain 26 provided with cutter bits 27. Said cutter bar is mounted, as hereinafter more fully described, to swing about the axis of a transverse horizontal shaft 28 having its ends fixed in the casing 24, and when so swung said cutter bar moves in a substantially vertical plane between the ways 23. The operating mechanism within the casing 24 comprises an electric or other motor 29 having a suitable controller 29a and a shaft 30 operatively connected with mechanism for moving the cutting mechanism in the ways 23, mechanism for actuating the cutter chain 26 on the bar 25, and mechanism for swinging the cutter bar 25 about the shaft 28.

For feeding or moving the cutting mechanism in the ways 23, there is provided a chain or other flexible feeding element 31 which, when in operation, is connected at one end to a suitable fixture 32 ait the forward end of one of the ways 23, passes about a feed sprocket 33 and guide sprockets 34 on the casing 24, and is connected at its o posite end to a suitable xture 35 at t e rear end of the guide 22. By rotating the feed sprocket 33 in one direction or the other, the cutting mechanism is moved longitudinally in the wafys 23, either forwardly or backwardly. For so rotating the feed sprocket 33, the following mechanism is provided. Fixed to the motor shaft 30 1s a inion 36 which meshes with a gear 37 fast on a shaft 38 suitably journaled in the casing 24 and carrying' a worm 39 which meshes with a worm gear 40 fast on an upright shaft 41 journaled in the casing 24 and in a horizontal web 42 therein. The feed sprocket 33 is loosely mounted on the shaft 41 and has secured thereto or formed integral therewith an internal gear 41 which meshes with a. pinion 4lb fast on an upright shaft 41 ]ournaled in a bracket 41Cl in the easing 24. The shaft 4lc has fast thereon a gear 41e which meshes with a gear 41f loose on the shaft 41. A double acting clutch 43 operated by a controlling handle 44 is adapted to connect either the sprocket 33 or the gear 41t to the shaft 41 for rotation therewith. thereby causing rotation of said feed sprocket in either direction. lVhen the clutch 43 is in the neutral position shown in Fig. 4 the feed sprocket is idle.

The cutter chain 26 is actuated by a sprocket 45 having a hub 46 rotatably mounted on the shaft 28. Keyed to the hub 46 is a bevel gear 47 which meshes with a bevel pinion 4S fast on a shaft 49 suitably journaled in the casing 24. Keyed or otherwise secured to the shaft 49 is a gear 50 which meshes with a pinion 5l on the front end of the motor shaft 30.

The cutter bar 25 is carried by an arm 52 projecting from a hub 53 rotatably mounted on the shaft 28. As shown in Figs. 2. and 3, the cutter bar 25 is laterally offset with respect to the arm 52 to bring said cutter bar into alinement with the sprocket 45. Keyed to the hub 53 is a worm gear 54 which meshes with a worm 55 on a longitudinal shaft 56 suitably journaled in the casing 24. Loosely mounted on the shaft 56 is a pair of bevel gears 57 controlled by a clutch 58 operated by a handle 59, whereby said gears 57 may be alternatively clutchedto the shaft 56 or both may be disconnected therefrom. Meshing with the gears 57 is a` bevel gear 60 rotatably mounted on a stud shaft 61 carried by the casing 24. Secured to or formed integral with the gear is a gear 62 which meshes with a pinion 63 fast on the shaft 41. By the foregoing connections it will be seen that either of the gears 57 may be clutched to the shaft 56 to cause the cutter bar to be swung either upwardly or downwardly about the axis of the shaft 28, or that, by disconnecting'- both of said gears from said shaft, the cutter bar may be held stationary by engagement of the worm 55 with the worm gear 54. It will be noted that this mechanism for adjusting the position of the cutter bar in a vertical plane, this bar swinging mechanism, is, so to speak, a distinct mechanism, though driven from the feed operating mechanism, and that it is a marked improvement over forms of bar swinging mechanism in which a single strand of chain or rope is connected in different ways to swing a bar in opposite directions, this mechanism including what may be called, for purposes of clarity and comparison, permanent connections with the bar which are capable of transmitting with out any readjustment thereof a bar swinging force in either direction, whereby there are eliminated the loss of time and the labor incident to rerceving etc., in the chain form of bar swinging mechanism referred to.

The pivotal mounting of the guide 22 upon the supporting arm 2O and the pivotal mounting of the latter upon the truck provide for a substantiall universal adjustahility of said guide an the cutting mechanism carried thereby. For emmple` the guide 22 may be adjusted angularly with respect to the truck about the pivot 21, in order to position the same transversely of the truck with the forward ends of the guides 23 extending in either direction from said truck and trackway. The arm 20 may also be swung about the pivot 19 to move the guide 22 transversely of the truck and trackway and longitudinally of itself to position the forward ends of the ways 23 at any desired distance at one side or the other of the trackway` thereby bringing the ends of said ways into any desired proximity to a wall or face extending parallel to said trackway at either side thereof irrespective of the distance of said wall or face from said trackway. Furthermore, longitudinal movement of the slide 16 by means of the screw 17 permits the position of said guide longitudinally of said truck to remain constant irrespective of its other adjustments.

Means are provided for supporting the projecting ends of the guide 22 and arm 20 when said guide is positioned transversely of the truck, as shown in Figs. 7 and 8. For supporting the forward ends of the ways 23, each of said ways has pivoted thereto. at its outer side, a jack 64 adapted to be swung from its normal horizontal osition shown in Fig. 1 into an upright position, as shown in Fig. 6 and, when in the latter position, to engage at its opposite ends the roof and bottom of the mine, respectively. thereby se curely holding the ends of the guides 23 against movement in any direction. For supporting the outer end of the arm 20 and the rear end of the guide 22, there is prof vided a pair of laterally movable folding brackets 65 pivoted at 66 to the ways 10 at opposite sides of the truck. Said brackets 65 normally occupy a position parallel to the truck, as shown in Figs. 1 and 2, but when the guide 22 is swung into a position transverse to the truck one or the other of the brackets 65, depending upon the direction in which said guide is turned, may be swung laterally outward about its pivot into the position shown in Figs. 7 and 8 beneath the outer end of the arm 20. Pivoted to the outer end of each of the brackets 65 is a to the length 64 turned into their upright vertically s folding i'right 67 having en adjusts e oot 68. e uprghts 6T occupy the positions shown m Fi 1 und 2, and may be retained in said position by suitable supporting brackets 69 carried 2g the ways 10. When one or the other of brackets 65 is swung outwardly into its an supporting position the corresponding upright 67 is turned downwardly und its foot 68 adjusted to engage the mine bottom, thereby supporting the outer end of said bracket.

For transportation about the mine, the guide 22 and erm 20 are turned into a. i-

non parallel to the l of the truc es shown in Figs. 1, 2, an 6, this being also the position of the parts in the operation ol entry driv' or in cutting a face transverse of the trackwav 12. The latter operation is illustrated in Fig. 6 und is as follows: The truck is moved on the truckwny 12 into' a. position to bring ,the ends of the ways 28 es closely es possible or convenient to the face to be cut, and the jacks stions to sup- Eort seid ways in this position. The motor aving been started, the clutch 58 is operated to cause the cutter bar 25 to be swun upwardl into the ition shown in fu lines in ig. 6, andls thereafter released to cause seid cutter her to be held in this position. The clutch 43 is then o erated to conneet the feed sprocket 33 wi the shaft 42 in a manner to cause the cutting mechanism to be fed forwardly in the ways 23 from the gosition shown in full lines in Fig. 6 into the otted line position indicated by the letter A in said ligure, thereby causing the cutter bar to enter the face. The clutch 58 is then a ein operated in a manner lto cause the cutter er to be swung downwardly from the dotted line lposition A into the dotted line peosition B, making a vertical cui, said clutch ing then disconnected to cause said cutter har to be retained in this position. Finally, the feed sprocket 38 is again actuated to cause the cutting mechanism to move rearwardly from the dotted line position B into the dotted line position C, thereby completini` the cut.

or the purpose of making u cnt in a face parallel to the treckwuy 12, the arm 20 and ide 22 are swung into the position shown m Fig. 7, or into that shown in Fig. 8, depending upon the side of the trackway st which said face is located. In so positioning the arts the ends of the ways 23 are placed as c osely as possible or convenient to the foce to be cut, the pivots 19 und 21 permit ting auch ositonmg of the parts. The proper brac et 65 is then swung laterally and eet on its upright 67 to support the rear end of the guide 22,. the jacks 64 are turned into their operative posltiom; as above explained, and the cutti mechanism operated m the manner above escribed in order to produce the ont. While the guide 22 is showninFige7am-l Sasoccup ingpositious substantially et `xvilht enges to the truck and treckway, it be seen that seid guide may swunghinto substantially en ar position wrt respect to said imei trac wey to cause the cutter har 25 to be swung inubstantally any vertical plane depending upon the nature and position of the out desired.

It will be seen that by virtue of the arrun ment above described, whereby the cutter r is permitted to move in a vertical plane between' the ways 23, and whereby said wslys muy be positioned as closely as desireb e to the face to be cut, the cut mechanism may be sup orted and guid in close proximity to sal face while permittin s movement of the parts into the dotted ne osition C shown in Fig. 6, as is necessary in order to complete a relatively deep cut. with a long cutter bar. D

While I have in this application specifically described one form which m invention me assume in practice, it w' be underst that this form of the same is shown for purposes of illustration und that the invention may be modified and embodied in other forms without departing from its spirit or the scope of the ap ended claims.

What I claim as new and esire to secure by Letters Patent is:

1. In s mining machine, the combination with e truck, of e guide normally disposed longitudinally thereof, kerf cutting mechanism including s pivoted cutter bar disposable-longitudinali of said guide and having its pivot dispoub e in a vertical lane intersecting said guide transversely tween its ends and movable in said guide longitudinelly of the latter, und means for mounting said uide on seid truck permitting angular and ongitudinnl movement of said guido relative to said truck.

2. In e mnin muchine,"the combination with e truck, o a guide normally disposed longitudinully thereof, cutting mechanism inc udng a pivoted cutter bar disposable longitudinally of scid guide and bevuto; its pivot disposable in s transverse plane mtersecting said guide between its ends and IMI lll

movable in said guide longitudinally of the lutter during the cutting operation. and menus for mounting said Fude on said truck permitting angular and ongitndnal movement of seid guide.

3. In u minm machine, the combination with a. truck, o an open-ended guide normnlly disposed longitudinally thereof, cntting mechanism including n pivoter] cutter bur disposable longitudinally of said guide und having its pivot disposable in u transverse plane intersecting said f rnicle between its ends and movable in said yguide longitudinelly of the latter, sud means for mounting said guide on said truck permittin an lar and longitudinal movement of sai gui c.

4. In a mining machine, the combination with a. truck, of a guide, kerf cutting mecha nism including a. motor and movable bodily under its own wer in said guide longitudina'lly of the at-tcr, and means for mounti said aide on said truck permitting angu ar an longitudinal movement of sind guide relative to said truck in a single horizontal plane.

5. In a mining machine. thc combination with a. truck adapted to i'iin vupon a trackway, of a guide movable longitudinally thereof, cutting mechanism disposed long itudinally of said n'nido and movable :in said guide longitudinally of thc latter said cutting meclianimn having a cutter Vhar and means for cutting` material alon one side thereof throughout its length, auf means f or mounting said guido on said truck penulttin y movement of said guide transversely of saic trackway while said guide occupies a position at rightangles to the direction of said trackway.

6. In a mining machine, the combination with a truck adapted to rim upon a trackway, of a guide normally disposed longitudiniilly thereof, cutting mechanism disposed longitudinali of said guide and mov able in said guide ongitndinally of the latter, and means for mounting said guide on said truck permitting angular movement of said guide and bodily movement of said guide transversely of said trackwey while said guide is disposed at right angles to said trackway.

7. In a mining machine, the combination with a, truck adapted to run upon a trackway. of a guide normally disposed longitudinally thereof, and kerf cuttinc mee anisin disposed longitudinally of said` ,cuide and movable in said guide longitudinally of the latter, said machine having provision for an'ularly and bodily positioning said guide wi h respect to said truck to bring its and at one side of said trackway and beyond the latter and vaiving the distance of said end from said trackivay irres tive of the angular position of said gui e.

8. In a mininl machine, the combination with a truck, o a guide normally disposed lo tudinally thereof, and kerf cutting mec anism disposable longitudinally of said guide and movable in saiddguide longitudinally of the latter, said gui e being movable into a sition transverse to said truck and being ongitudinally movable relative to said truck when in a position extending lon-` gitudinally of said truck.

9. In a inininfr machine, the combination with a truck, o a su porting arm pivoted at one end to said trnc for movement trans. vcrsely thereof whereby the opposite end thereof is disposed outside the lateral edge of the truck, kerf cutting mechanism movably carried on said opposite end of said arm and including a ivoted cutter bar, and means driven by said korf cutting mechanism for moving the latter relative to said arm to elcct amovement of translation of said mechanism.

10. In a mining machine, the combination with a truck, of a suporting arm pivoted Y at one end t0 said truc for movement transversely thereof whereby the opposite end thereof is disposed outside the lateral edge of the truck, singularly ad'ustable lierf cuttx mechanism carried lay said op posite en of said arm and including a pxvoted cutter bar and means driven by said kerf cutting mechanism for faedin the latter transveiscly of said arm and bo ily relative thereto.

ll. In a mining machine, the combination with a truck, of a supporting arm pivoted at one end to said truck for movement transversely thereof, a guide carried by the opposite end of said arm, and cuttin v mechanism movable in said guide and osed longitudinally of the latter and including a pivoted cutter bar.

12. In a mining machine the combination with a truck, of a su porting arm ivcted at one end to said tra for movemen transversely thereof, a 4Frido pivotally mounted on the opposite en of said arm,and cutting mechanism movable in said uide and dis posed longitudinally of the atter and inl cludin a. pivoted cutter bar.

18. n a mining apparatus, a support, s. pivot thereon vmovable bodily transversely relative thereto in a single horizontal plane, guiding means movable transversely about said pivot, and kerf cutting mechanism mov' able 1n said guidin means and normally disposed longitudina y thereof.

14. In a mining machine, the combination with a truck, of a guide normally disposed longitudinally thereof, and mechanism for cu ing a vertical kerf, said mechanism including a pivoted cutter bar disposable 1ongitudinally of said guide and having its pivot disposable in a vertical lane interseating said guide transversel etween its ends and being movable in sai guide longitudinall of t e latter, and Suid guide being angular y and longitudinally movable relatve'to said truck.

15. In a mining machine, the combination with a truck, of a guide normally disposed longitudinall thereof, and cutting mechanism dispose le lon itudinally of said uidc and movable in sai guide longitudine of the latter, said cutting mechanism inclu ng a vertically swinging cutter bai' havin its ivot disposed in a transverse vertical p une intersecting s'aid guide between its ends, and said guide being singularly and longitudinally movable relative to said track.

16. In a mining machine, the combination with a truck, of a pair of horizontally disposed parallel ways, and cutting mechanism movable in said ways longitudinally of the latter, said cutting mechanism includin a vertically swinging cutter bar movable ghetween said ways, and said ways being angularly and longitudinally movable on said truck.

17. In a mining machine, the combination with a truck, of a guide an ularl and longitudinally movable on sai truc cutting mechanism in said guide including a cutter bar, a motor, and a feed sprocket actuated by said motor, and afeed chain connected at its ends to said guide, said feed chain cooperating with said feed sprocket to move said cutting mechanism longitudinally in said guide.

18. In a mining machine, the combination with a truck, of a guide normally disposed and movable longitudinally of said truck, cutting mechanism movable in said guide and normally disposed longitudinally of the latter, said guide being movable into a position transverse to said truck, and jacks carried by said guide for supporting the same when in transverse position.

19. In a mining machine, the combination with a truck, of a guide normally disposed longitudinally of said truck, cutting mechanism movable in said guide longitudinally of the latter, said guide being movable into a position transverse to said truck, and a folding bracket on said truck for supporting said guide when in transverse position.

20. In a mining machine, the combination with a truck, of a guide on said truck; cutting mechanism movable in said guide longitudinally of the latter said guide being movable into a position transverse to said truck, folding brackets on said truck for supporting said guide when in transverse position, and folding uprights carried by said brackets for supporting the same.

21. In a mining machine, in combination, a truck, a guide on said truck, cutting mechanism movable in said guide longitudinally of the latter, said guide being movable into a position transverse to said truck, a pair of folding jacks carried by one end of said guide for supporting the same when in transverse position, a folding bracket on said truck or supporting the opposite end of said uide, and a folding upright carried by said racket for supporting the same.

22. In a mining machine, in combination, a truck, a supporting arm pivoted at one end to said truck for movement transversely thereof, a guide pivoted on the opposite end of said arm, cutting mechanism movable in said guide longitudinally of the latter, and folding brackets on said truck for supporting said arm and-guide.

\ 23. In a mining machine, in combination,

a truck, a suppiorting arm pivoted at one end to said truc for movement transversely thereof, said arm and its pivot being also movable longitudinally of said truck, and kerf cutting mechanism movably mounted on the opposite end of said arm and including a guide pivoted on the latter and cuttingi mechanism movable relative to said gui e.

24. In a mining machine, in combination, a truck, a guide extending longitudinally of said truck, a slide movable in said guide, a screw for moving said slide in said guide, a supporting arm normally disposed longitudinally of said truck and pivoted at one end to said slide for movement in a plane transversely of said truck, and kerf cutting mechanism movably mounted on the opposite end of said arm.

25. In a mining machine, in combination, a truck, a guide extending longitudinally of said truck, a slide movable in said guide, a screw for moving said slide in said guide, a supporting arm pivoted at one end to said slide for movement transversely of said truck, a guide pivotally mounted on the opposite end of said arm, and cutting mechanism movable in said guide longitudinally of the latter.

26. In a mining machine, a swinging cutter bar cutting throughout its length, a worm gear rigidly connected to said bar, a worm cooperating with said gear for swinging said bar in a plane and for holding the same in adjusted position, a truck, and means including a motor reciprocable with and actuating said bar and operable to rotate said worm for reciprocating said swinging mechanism and said bar relative to said truck when the bar isdisposed in opposite angular positions relative to its path of reciprocation.

27. In a mining machine, in combination, a truck adapted to run upon a trackway, a normally longitudinally extending guide on said truck disposed transversely thereof, and cutting mechanism disposed longitudinally of said guide and movable in said guide longitudinally of the latter during the cutting operation, said guide being adjustable longitudinally of said truck and also transversely with respect thereto while maintaining a constant angle therewith to vary the distance of its end from the trackway.

28. In a device for cutting a kerf in an entry, a support adapted to be laced in the entr a normally longitudinal y extending guide'meunted thereon and movable longitudinally and angularly relative thereto and having a length substantially equal to the width of the entry, and cutting mechanism mounted on said guide of less length than the latter.

29. In a mining machine, a machine frame including a motor, cutting mechanism at one end of said motor including a swinging cutter bar disposed in a vertical plane, and means for operatin sai-d cutting mechanism and swinging said ar respectively connected to opposite ends of said motor, said means for swinging said bar including a ower transmitting element rigid with the ar, a rotatable power transmittin element having a power connection with sai motor, and permanent power transmitting connections between said member and element operative to transmit bar swinging force to said bar in either direction.

30. In a mining machine, a machine frame including a motor, cutting and feeding mechanisms connected to opposite ends thereof, said cutting mechanism being adjustable and disposed in a vertical plane, and means for adjusting said cutting mechanism comprising distinct power transmitting connections operative to transmit a bar swinging torque in opposite directions and having an initial driving gear driven by said feeding mechanism.

31. In a mining machine, a machine frame including a motor, cutting and feeding mechanisms connected to opposite ends thereof, said cuttin mechanism being adjustable and dispose in a vertical plane, and means for adjusting said cutting mechanism connectible at will with said feeding mechanism, said means for adjusting said cutting mechanism having permanent connections with the latter operative to transmit positively thereto adjusting movement in opposite directions.

32. In a mining machine, a machine frame including a motor, cutting and feeding mechanisms at opposite ends thereof, cutter adjusting mechanism for adjusting said cutting mechanism in a vertical plane, and having permanent connection with said cutting mechanism operative to transmit positively thereto adjusting movement in opposite directions, and means for actuating one of said mechanisms from the front end of the motor and the remainder from the rear end of the motor.

33. In a mining machine, a machine frame movable rectilinearly during cutting and including a motor having an axis of rotation parallel to the direction of rectilinear movement, cutting mechanism including a cutter bar adjustable on an axis on the front end of said frame, means for driving said cutting mechanism from one end of said motor, and means for adjusting the bar about its axis driven from the opposite end of said motor, said means for adjusting said bar including a power transmitting element rigid with the bar, a rotatable power transmitting element having a power connection with the motor, and permanent power transmitting connections between said member and element operative to transmit bar adjusting force to said bar in either direction.

34. In a mining machine, amacliine frame including a motor, cutting mechanism including a cutter bar adjustable on a substantially horizontal transverse axis on the front end of said frame, means for driving said cutting mechanism from one end of said motor, and means for adjusting the bar about its axis driven from the opposite end of sain motor, said means for adjusting said bar including a power transmitting element rigid with the bar, a rotatable power transmitting element having a power connection with the motor, and permanent power transmitting connections between said member and element operative to transmit bar adjusting force to said bar in either direction.

35. In a mining machine, a machine frame including a motor, cutting mechanism including a cutter bar adjustable on an axis on the front end of said frame, means for driving -said cutting mechanism from one end of said motor, means for adjusting the bar about its axis driven from the opposite end of said motor and comprising permanent connections with said bar operative to transmit positively thereto adjusting movements in opposite directions, and feeding mechanism for said frame operative to feed the same rectilinearly in opposite directions towards and from a face during cutting and driven from the last mentioned end of said motor and driving said adjusting means.

36. In a mining machine, a machine frame including a motor, cutting mechanism including a cutter bar adjustable on a substantially horizontal transverse axis on the front end of said frame, means for driving said cutting mechanism from one end of said motor, means for adjusting the bar about its axis driven from the opposite end of said motor, and comprising permanent connections with said bar operative to transmit positively thereto adjusting movements in opposite directions, and feeding mechanism for said frame driven from the last mentioned end of said motor and driving said adjusting means.

37. In a mining apparatus, a wheeled truck, a support thereon presenting a guideway, kerf cutting mechanism including a pivoted cutter bar movable longitudinally of said guideway with its pivot disposed between the sides of the latter whereby said bar is swingable through between the sides of the guideway, and feeding mechanism for feeding said cutting mechanism relative to said guideway including feed operating means movable with said cutting mechanism and cooperating fiexible feeding means.

38. In a mining apparatus, a wheeled truck, a support thereon presenting a guideway, kerf cutting mechanism including a pivoted cutter bar movable longitudinally of said guideway, and feeding mechanism for feeding said cutting mechanism relative llU Sli

nemers to said guideway including feed operating means movable with said cutting mechanism and cooperati flexible feeding means having its ree en s connectible to the frame at longitudinally spaced points relative to both of which said feed operating means moves bodily during feeding.

39. In a mining apparatus, a wheeled truck, a su port presenting a plurality of spaced gui aways, kerf cutting m includin pivoted cutter bar movable 1ontudina of said guideways and swinging etween e sam and feeding means for feeding said mec anism relative to said guideway including feed operating means movable with said mechanism and cooperating ilexible feeding means.

40. In a mining apparatus, a wheeled truck, a support presenting a luralit of horizontal aterally spaced gui eways, f cutting mechanism inc uding a ivoted cutter bar movable longitudinally o said guide ways and swinging between the same in a vertical plane, and feeding means for feeding said mechanism relative to said guidewa including feed operating means movable wit said mechanism and cooperating exible feeding means operative y connected thereto.' A A 41. In a mining machine, a support, a motor having an armature shaft, cutting mechanism on said supgort includin a pivoted cutter bar dispose in a verticaI plane, actuating means for said bar including a connection with one end of said armature shaft a worm gear concentric with the axis of said bar for movement therewith during swinging thereof, a worin meshing with sai worm gear, and means including an operative connection with the other end of said armature shaft connected to said worm for swinging said bar in a vertical plane about its pivot.

42. In a mining machine, a support, cutting mechanism reciprocable thereon includ in a pivoted cutter bar disposed in a vertiplane, a worm gear concentric with the axis thereof and movable therewith durinf swinging thereof, and power means inclu ing a motor having an armature shaft for operation said cutter bar, for feeding said cutting mechanism on said support and for rotating said worm to effect swingingI of said bar in a vertical plane about its pivot and including operative connections between one and of said armature shaft and said worm, feeding `mechanism actuated by the same end of said armature shaft and mechanism for actuating said bar driven by the opposite end of said amature shaft.

43. In a minin machin a support, cutting mechanism t ereon in uding a ivoted cutter bar disposed in a vertical pane, a worm gear concentric with the axis thereof and movable therewith during swinging thereof, a worin meshin with said worm gear, wer means, inclu ing-a motor whose axis o rotation 1s parallel to the direction of feed of said cuttin mechanism and which is bodily movable wi said bar, connected between said cutting mechanism and said worin for swinging said bar in a vertical plane about its pivot, and power connections to said cuttingl mechanism' for feed1ng` said bar lon tudina ly into a face.

In a mining a paratus, a wheeled truck, a guide normal y displosed longitudinull thereof and having terally spaced ui e members, means for moving said guide on ltudinally and angularl relative to said tru and vertical kerf cu ting mechanism mova le in said guide including a ivoted lclutter bar movable between said gui e mein ers.

45. In a mining a paratus, a wheeled truck, aguide normal y di osed longitudinall thereof und havin terally spa/ced guia members, means r die sing said iide transversely relative to said truck in ffeient positions longitudinally of the latter, and vertical ker -cutting mechanism movable in said guide including a pivoted ieitter bar movable between said guide meni- 46. In a mining a paratus, a wheeled truck, a guide normal y disposed longitudinali thereof and havin aterally spaced gui e members, means or di osin said aide transversely relative to sui truc and s lifting the position of said guide transversely, and vertical kerf cutting mechanism movable in said guide including a pvoted tter bar movable between said guide memivoted thereon upon an isposable in a horizontal p ane, a minin machine receivin guide ivoted on the ree end of said mem r and di ble lon itudinally thereof or angular y relative creto, and a minin machine disposed on and movable longitu inally of said guide and having a cutter bar disposable parallel to said guide to cut beyond the extremity thereof.

48. In n mining apparatus, a wheeled truck, a member pivoted thereon upon an u right axis and disposed in a horizontal plhne, a minin machine receivin guide pivoted on the ree end of said mem r and dis osabls longitudinally of the latter or anillirly relative thereto, and a minin mac ine dis osed on and movable longitu inally of said guide and having a lvoted cutter bnr disposable I [)ieiirallel to said guide and adapted to cut yond the end thereof.

49. In a mining apparatus, a wheeled truck n member pivoted thereon upon an upright axis and disposed in ,a horizontal plane, an elongated mining machine receivtruck a member u right axis and 4T. In a mining apparatus, a wheeled ing aide ivoted on the free end of said mem er an disposable longitudinally of the latter or an ulairl relative thereto, and a mining inaciine isposed on and movable longitudinally of said guide and having a pivoted cutter bar disposed in a vertical plane to which thc major dimension of said guide is parallel.

50. In a mining apparatus, a wheeled truck, a member pivoted thereon u on an u right axis and disposed in a horizontal pane, a mining machine receiving guide aving major and minor dimensions pivoted on the free end of said member and disposable longitudinally of the latter or angular-ly relative thereto, and a. mini machine disposed on and movable longitudinally of said guide and having a pivoted cutter har dis oscd in a vertical lane intersecting sai guide parallel to its major dimension.

5I. In a mining machine adapted to cut on the arcwall system, a machine frame includin a motor having an axis of rotation paralle to the direction of rectilinear movements of said machine during arcwall cutting, cutting mechanism at one end of said motor including a Swingin cutter bar, means for operating said cutting mechanism operatively connectible to one end of said motor', and means for swinging said bar and locking it positively against movement in either diiection in adjusted positions operatively connectible to the other end of said motor.

52. In a mining apparatus, a wheeled truck, a support thereon presenting a guideway, kerf cutting mechanism including a pivoted cutter bar movable longitudinally of said uideivay with its pivot disposed bctween tie sides of the latter and adapted to cut a vertical kerf, and feeding mechanism for feeding said cuttin mechanism oppcsitcly relative to said gui eivay includ ing feed operating means movable with s aid cutting mechanism and coo erating flexible cedin means having fixe ends.

53. fn a mining machine, a wheeled truck, power operated truck ropulsion mechanism, a cutter bar carriedJ by said truck and sivingable in a vertical plane, power operated worm gearing for effecting swinging of said bar including u worin rotating on a horizontal axis and a worin wheel secured to said bar, a cutter chain on said bar, and

wer operated menus for electn circuliiiion of said cutter chain, all of sai power operated means being self-contained. n

54. In a mining apparatus, a machine frame having a motor intermediate the ends thereof, cutting mechanism at one end of seid frame including a pivoted cutter bary elements,

having orbitall moving cuttin dliy motor for means actuate one end of sai ellecting orbital movement 'of said cutting elements, and means actuated by the other und of said motor for effecting bar swing including a threaded member rotatable on a. horizontal axis extending longitudinally of the motor and self-locking ower' transmitting connections between t e same and said har-` 55. In a mining machine, a machine frame includin a motor, cutting mechanism at one en of said motor including a swinging cutter bar disposed in a vertical plane, and means for o stating said cutting mechanism and reverse y swinging said bar respectively connected to o posite ends of sazmotor, each of said ast mentioned means comprising intemieshing gear elements at the end of said motor at which the bar is disposed. I

56. In e mining machine, a machine frame including a motor, cu mechanism at one end of said motor inclu a swinging cutter bar disposed in a vertical lane, means for o ting said cotti? m nism contg one end of saih niotor, andtisedllfoc ing ar swinging mec anism opera v connectible to the opposite end of said motel?.

57. In a mining machine, a machine fra-mo including a motor,cutting and feeding mechanisms supported on said frame, o erative connections between one end of sai motor and said cutting mechanism, operative connections between the other end of said motor and said feeding mechanism, said cutting mechanism being adjustable and in a vertical plane, and means for justing said cuttin mechanism including ring at the first en of the motor driven ergm said operative connections between said feeding mechanism and said motor.

58. In a mining machine adapted to cut on the arcwall system, a machine frame including a motor having an axis of rotation parallel to the direction of rectilinear movements of said machine during arcwall cntting, cuttin mechanism including a cutter bar adjusts le on an axis on the front end of the frame, means for driving the cutting mechanism from one end of the motor, and a gear train for adjusting the bar about its axis and for lock' it in fixed positions operatively connectib e to the opposite end of the motor.

59. In a mining machine adapted to cut on the arcwall system, a machine frame including a motor having an axis of rotation parallel to the direction of rectilinear movements Yofsaid machine during arcwall cutting, cuttin mechanism including a cutter bar adjusta le on an axis on the front end of the frame, means for driving the cuttin mechanism from one end of the motor, an means for adusting said bar oppositel about its axis riven from the opposite end llb nectib of said motor including a threaded member andhreversing mechanism cooperating therewit 60. In a mining machine, a machine frame including a motor, cutting mechanism including a cutter bar adjustable on an axis on the front endof the frame, means driving the cutting mechanism from one end of the motor, and means for adjusting said bar opposite? about its axis driven from the o poste en of said motor including a t readed member rotatable on an axis parallel to the axis of rotation of the motor.

6l.. In a mining machine, a machine frame including a motor, cuttin mechanism including a cutter bar adjus le on an axis on the front end of the frame, means for driving the cutting mechanism from one end of the motor, and means for adjusting said bar oppositel about its axis driven from the o posite en of said motor including a.

eaded member rotatable on an axis cxtcndin longitudinally of the machine frame.

62. n a. mining machine, a machine frame including a motor, cuttin mechanism includin a cutter bar adjust le on a substantially orizontal transverse axis on the front end of the frame, said motor having an axis of rotation parallel to the plane of bar swing, means for driving the cuttin mechanism from one end of the motor, en means for adjusting the bar about its axis and for locking it in fixed positions operatively con.-

e to the opposite end o the motor.

63. In a mining machine, a machine frame including a motor, cuttin mechanism includin a cutter bar adjusts le on a substantially orizontal transverse axis on the front end of the frame, means for drivin the cuttin mechanism from one end of t e motor, an means for adjusting said bar oppositely about its axis driven from the o posits end of said motor including a threa ed member andhreversing mechanism cooperating therewit 64. In a mining machine, a machine frame including a motor, cutting mechanism includin a cutter bar adjustable on a substantially orizontai transverse axis on the front end of the frame, means for drivin the cutmechanism from one end of e motor, an means for adjusting said bar oppositel about its axis driven from the posits c of said motor including a three ed member rotatable on an axis parallel to thc axis of rotation of the motor.

65. In a mining machine, n machine frame including a motor, cutting) mechanism includin a cutter bar adjusts le on a substantially orizonta'l transverse axis on the front end of the frame, means for dri the cutting mechanism from one end of e motor, and means for adjusting said bar oppositoly about its axis driven from the o posite end of said motor including a three ed member rotatable on a longitudinally extending axis. dlnaminingapparatus, ama frame, comprisin a motor disposed intermediate the ends t ereof, cutting mechanism including a ivoted cutter bar adjacent one end of said rame and actuated by the ad' for cent end of said motor, a member rotate le on an axis extending longitudinally of said frame and having a threaded portion, bar swinging means including an element eooperatively engaging said threaded portion, and means for rotatin said threaded member actuated by the o er end of said motor including a pair of bevel ars coaxial with said member, a driving pimon driven by said motor and meshin with said bevel gears and means for se ectively connecting bevel gears in driving relation to said member.

6i'. In a mining apparatus, a machine frame comprising a motor intermediate its ends, cutting me anism erre at one end of said frame and'compris a pivoted cutter chain carrylng cutter ar, op-

eratlve connections between the adjacent end of said motor and seid cutter chain, a bevel pinion at the opposite end ofsaid motor, power transmission connections between said bevel pinion and said opposite end of said motor, bar swinging means driven by said bevel inion, and machine feeding mechanism riven from said power transmission connections at a point in the latter between the motor and the bevel pinion.

68. In a. mining apparatus, a machine frame comprising a motor intermediate its ends, cuttn mechanism arranged at one end of said cutter chain carrying1 cutter bar, o eratlve connections between te adjacent en of said motor and said cutter cham, a bevel pinion at the opposite end of said motor, power transmission connections between said bevel inon and said opposite end of said motor ar swinging means driven bv said beve pinion, and reversible machine feeding mechanism driven from said power transmission connections at a point in the latter between the motor and the bevel pinion.

69. In a mining apparatus, a. machine frame comprising a motor intermediate its ends, cutting mechanism arranged at o no end of said frame and comprlsm a pivoted cutter chain carrying cutter r, op-

erative connections between the adjacent end of said motor and said cutter chain, a bevel pinion at the opposite end of said motor,

ower transmission connections between said bevel pinion and said opposite end of said motor, bar swinging means driven by s aid bevel pinion and plural speed. reversible machine feeding mechanism driven from said power transmission connections at a.

point in the latter between the motor and the bevel pinion.

ame and comprising a pivoted motor and the bevel 70. In a miningapparatus, a machine frame comprising a motor intermediate its ends, cutt' mechanism arranged at one end of said ame and comprising a pivoted cutter chain carr cutter bar, o eratve connections between e adjacent cn of said motor and said cutter chain a bevel pinion at the opposite end of sai motor power transmision connections between said bevel inion and said opposite end of said motor,

r swinging means driven by said bevel pinion, and machine feeding mechanism diiven from said power transmission connections at a point m the latter between the inion and operative to feed said machine in dilcrent directions at dill'erent eeds.

7l. In a mining machine adagted to arcwall cutting, a vertically swin' le shearing cutter chain carrying cutter ar, a motor provided with a pluralit of power transmitting elements rotatab e on axes parallel to the path of machine movement during cuttin operative connections between one of sai elements and said cutter chain, and a gear train directl connecting another of said elements to said bar to effect bai' swing and including clutch controlled reversing mechanism.

72, In a mining machine ada ted to arcwall cutting, a vertically swinga le shearing cutter chain carrying cutter bar, a cutter chain driving sprocket coaxial with the pivot of said bar, a bar swinging member movable about said bar pivot, a motor having a plurality of power transmittin elements rotatable on axes parallel to t e path of niachine movement during cutting, and Voperative connections between one of said clements and said sprocket and between the other and said member, said last mentioned connections including a screw member at the end of the motor adjacent the bar.

78. In a mining machine, a machine frame carrying a pivoted cutter bar, a motor on said machine frame having a power shaft rotating on an axis parallel to the plane of.

bar s and extendi longitudinally of said mae ine frame1 said cutter bar rovided with a cutter chain, means alor ing operative connection between said motor power shaft and said cutter chain to drive the latter means includin a reversi mechanism independent of sai last nume means affording operative connection between said motor and said cutter arm to swing the latter about its pivotal axis positively in either direction merely on opposite actuations of said reversing mechanism, and liexible feeding means for feedinul said machine directly on a mine bottom.

74. In a mining machine, a. machine frame, a motor thereon having a power shaft extending longitudinally of said frame, a cutter chain carrying ber swingable about a substantially horizontal transverse axis at one end of said motor, motor operated cutter chain drivin means, and iueans driven by the end of said power shaft remote from said cutter bar for adjusting the latter oppositcly about its axis! sadineans comprising connections including reversing gea and operative automatically on operation o said reversing mechanism to effect positive swing in either direction.

75. In a mining machine, a machine frame, a motor thereon having a power shaft extending longitudinally of said frame, a cutter chain carrying bar swngable about a horizontal axis at one end of said motor, motor operated cutter chain driving means, and means driven by the end of said power shaft remote from said cutter bar and including a threaded member rotatable on a longitudinally extending axis for adjusting the bar oppositely about its axis.

76. In a min' macliine,amachine frame, o motor thereon iaving a power shaft extending longtudinally of said frame, a cuttcr chain carrying bai' swingable about a horizontal axis at one end of said motor, motor operated cutter chain driving means, and ineens driven by the end of said power shaft remote from said cutter bar and including an externally threaded member rotatable on a longitudinal axis for adjusting ine latter oppositel about its axis.

77. In a mining mac ine, a machine frame, a motor thereon having a. power shaft eirtending longitudinally of said frame, a cutter chain carrying cutter bar pivotable about a horizontal axis at one end of said motor, a cutter chain driving sprocket rotatable on said axis, driving gearing therefor including u bevel gear coaxial with said sprocket and a motor driven bevel pinion rotatable on a longitudinally extendinf,v axis, and means for swinging said bar inc udin a threaded member rotatin on a horizonta axis lying in a longitudinn y extending vertical plane and having driving connections permitting reverse rotation thereof without reversal of the motor.

78. In a. mining machine, a machine frame including a motor, cutting mechanism including a cutter bar adustable on an axis on the front end of sait frame, means for drivin' Said cutting mechanism from one end ofsaid motor, and means for adjusting the bar about its axis driven from the opposite end of said motor and including reversebevels rotating on an axis parallel to the axis of rotation of said motor.

79. In a mining machine, a machine frame including a motor, cutting mechanism includ' a cutter bar adjustable on a. transverse axis on the front end of said frame, means for driving said cutting mechanism from one end of said motor, an means for adjusting the bai' about its axis driven from lll) the opposite end of said motor and including reverse bevels rotating on an axis parallel to the axis of rotation of said motor.

80. In a mining machine, ak machine frame including a motor, cuttin mechanism including a cutter bar adjustab e on an axis on the front end of said frame, means for driving said cutting mechanism from one end of said motor, and means for adjusting the bar about its axis driven from the opposite end of said motor and including reverse bevels rotating on an axis parallel to the axis of rotation of said motor and at the last mentioned end of the latter.

81; In a mining machine, a machine frame including a motor, cutting mechanism including a cutter bar adjustable on a transverse axis on the front end of said frame, lneans for driving said cutting mechanism from one end of said motor, and means for adjusting the bar about its axis driven from the opposite end of said motor and including reverse bevels rotating on an axis parallel to the axis of rotation of said motor and at the last mentioned end of the latter.

82. In a mining machine, a machine frame including a motor, cutting mechanism including a cutter bar carryinv orbit-ally moving cutting elements and adjustable on an axis on the front end of said frame, means for driving said cutting mechanism from one end of said motor, and means for adjusting said bar about its axis and effecting opposite rectilinear feeds thereof While said elements traverse at all times their orbits in the same direction, said last mentioned means driven from the opposite end of said motor and including, to effect bar adjust ment about its axis, a plurality of gear members on the front end of the machine.

83. In a mining machine, a machine frame mcluding a motor, cutting mechanism including a cutter bar carrying orbitally moving cuttin elements and adjustable on a substantial y horizontal transverse axis on the front end of said frame, means for drivmg said cutting mechanism from one end of said motor, and means for adjusting said bar about its' axis and effecting opposite reetilmear feeds thereof While said elements traverse at all times their orbits in the same direction, said last mentioned means driven from the opposite end of said motor and lncluding worm gearing at the front end of the machine for effecting bar swing.

84. In a mining machine, a machine frame including a motor, cutting mechanism including a cutter bar carryinnr orbit-ally moving cutting elements and adjustable on an axis on the front end of said frame, means for driving said cutting mechanism from one end of said motor,4 and means for adjusting said bar about its axis automatically operative on cessation of adjustment to lock it against movement in either direction and means for effecting opposite rectilinear feeds of said cutting mechanismwhile said elej ments traverse at all times their orbits 1n the same direction, said last two mentioned means driven from the opposite end of said motor and including a flexible element and rotatable means cooperating therewith.

85. In a mining machine, a machine frame including a motor, cutting mechanism including a cutter bar carrying orbitally moving cutting elements and adjustable on a transverse axis on the front end of said frame, means for driving said cutting mechanism from one end of said motor, means for adjusting said bar about its axis automatically operative on cessation of adjustment to lock it against movement in either direction, and effecting opposite rectilinear feeds thereof While said elements traverse at all times their orbits in the same direction,

said last mentioned means driven from the opposite end of said motor and including a flexible element and rotatable means cooperiating therewith.

86. In a mining machine, a machine frame including a motor, cutting mechanism including a cutter bar carrying orbitally moving cutting elements and adjustable on an axis on the front end of said frame, means for driving said cutting mechanism from f one end of said motor and means for adjusting said bar about its axis and effectmg opposite rectilinear feeds thereof While said elements traverse at all times their orbits in the same direction, said last mentioned means driven from the opposite end of said motor and including a flexible element and rotatable means cooperating therewith, and a member rotatable in either direction on an axis horizontal and parallel to the .direction of rectilinear feed and disposed at the front end of the frame.

87. In a mining machine, a machine frame including a motor, cutting mechanism including a cutter bar carrying orbitally moving cutting elements and adjustable on a transverse axis on the front end of said frame, means for driving said cuttin mechanism from one end of said motor an means for adjusting said bar about its axis and effecting opposite rectilinear feeds thereof while said elements traverse at all times their orbits in the same direction, said last mentioned means driven from the opposite end of said motor and including a flexible element and rotatable means cooperating therewith, and a member rotatable 1n either direction on an axis horizontal and parallel to the direction of rectilinear feed and disposed at the front end of the frame.

88. In a mining machine, a machine frame including a motor, cutting mechanism including a cutter bar carrying orbitally movin cutting elements and adjustable on an axis on the front end of said frame, means inf) lll)

for driving said cutting mechanism from one end of said motor, means for adjusting said bar about its axis, and means elfectin opposite rectilinear feeds thereof while sai elements traverse at all times their orbits in the same direction, each of said last two mentioned means driven from the opposite end of said motor and one including a flexible element and rotatable means cooperating therewith and the other a member individual thereto and rotatable in either direction on an axis horizontal and parallel to the direction of rectilinear feed.

89. In a mining machine, a machine frame including a motor, cutting mechanism including a cutter bar carrying orbitally moving cutting elements and adjustable on a substantially horizontal transverse axis on the front end of said frame, means for driving said cutting mechanism from one end of said motor, means for ad'usting said bar about its axis, and means e ecting opposite rectilinear feeds thereof while said elements traverse at all times their orbits in the same direction, each of said last two mentioned means driven from the opposite end of said motor and one including a fiexible element and rotatable means cooperatin therewith and the other a member indivi ual thereto and rotatable in either direction on an axis horizontal and parallel to the direction of rectilinear feed.

90. In a mining machine, a machine frame including a motor, cutting mechanism at one end of said motor including a swinging cutter bar pivotable about a horizontal axis transverse to said frame, means for operating said cutting mechanism operatively connectible to one end of said motor, and means for Swingin said bar and locking it in adjusted positions operatively connectible to the other end of said motor and including a worm and a worm wheel, the latter rigi with the bar.

91. In a mining machine, a machinewframe including a motor, cutting mechanism at one end of said motor including a swinging cutter bar pivotable about a horizontal axis transverse to said frame, means for operating said cutting mechanism operatively connectible to one end of said motor and means for Swingin said bar and locking it 1n adjusted posltions operatively connectible to Y the other end of said motor, said bar swinging mechanism includin reverse bevels rotating on an axis paral el to the plane of bar swing.

92. In a mining machine, a machine frame including a motor, cutting mechanism at one end of said motor including a swinging cutter bar pivotable about a horizontal axis transverse to said frame, means for operating said cutting mechanism operatively connectible to one end of said motor, and means for swinging said bar and locking it in adjusted positions operatively connectible to the other end of said motor, said bar swinging mechanism including reverse bevels rotating on a horizontalaxis parallel to the plane of barV swing.

93. In a mining machine, a pivoted cutter bit carrying cutter bar swingable in a vertical plane, actuating means for said bits, and means for swinging said bar in opposite directions including reverse bevels rotating simultaneously in opposite directions on an axis parallel to the plane of bar swing.

94. In a mining machine, a pivoted cutter biticarrying cutter bar swingable in a vertical plane, actuating means for said bits, and means for swinging said bar in opposite directions including reverse bevels rotating on a fixed horizontal axis parallel to the plane of bar swing.

95. In a mining machine, a pivoted cutter bit carrying cutter bar swingable in a vertical plane, actuating means for said bits, and means for swinging said bar in opposite directions including reverse bevels rotating on an axis parallel to the plane of bar swing and adjacent the end of the machine remote from said bar.

96. In a mining machine, a pivoted cutter bit carrying cutter bar swingable in a vertical plane, actuating means for said bits, and means for swinging said bar in opposite directions including reverse bevels rotating on a horizontal axis parallel to the plane of bar swing and adjacent the end of the machine remote from said bar.

97. In a mining machine, a wheeled truck, power operated truck propulsion mechanism a cutter bar carried by said truck and swingy able in a vertical lane, power operated worm gearing for e ecting swinging of said bar including a worm rotatable on a horizontal axis parallel to the plane of bar swing and a worm wheel whose axis is alined with the axis of bar swing, a cutter chain on said bar, and power operated means for eiectin circulation of said cutter chain, all of sai power operated means being self-contained.

98. In a mining machine, a wheeled truck, power operated truck propulsion mechanism, a cutter bar carried by said truck and swingable in a vertical plane, power operated worm gearing for effecting swinging of said bar including a worm rotatable on a horizontal axis parallel to the plane of bar swing and driving gearing therefor including reverse bevels, a cutter chain on said bar, and power operated means for effecting circulation of said cutter chain, all of said power operated means being self-contained.

99. In a mining machine, a wheeled truck, power operated truck propulsion mechanism, a cutter bar carried by said truck and swingable in a vertical plane, power operated worm gearing for effecting Swingin of said bar including a worm rotatable on a orizontal axis parallel to the plane of bar swing and driving gearing therefor including reverse bevels coaxial therewith, a cutter chain on said bar, and power operated means for effecting' circulation of said cutter chain, all of said power operated means being selfcontained. y

100. In a mining apparatus, a machine frame having a motor intermediate the ends thereof, cutting mechanism at one end of said frame including a horizontally pivoted cutter bar having orbitally moving cutting elements, means actuated by one end of said motor for ell'ecting orbital movement of said cutting elements, and means actuated by the other end of said motor for eiec'ting bar swing including a threaded member rotatable on a horizontal axis and self-locking power transmitting connections between the same and said bar.

101. In a mining apparatus, a machine frame having a motor intermediate the ends thereof, cutting mechanism at one end of said frame including a horizontally pivoted cutter bar having orbitally moving cutting elements` means actuated by one end of said motor for effecting orbital movement of said cutting elements, and means actuated by the other end of said motor for effecting bar swing including a threaded member rotat able on a horizontal axis extendin longitudinally of the motor and self-locking power transmitting connections between the same and said bar.

102. In a mining machine, a motor hav-l posite end of said motor and including a fiexible chain member for effecting the rectilinear bodily movements and gearing wholly independent of said chain member for effecting bar swing.

103. In a mining machine, a motor havin a rotating shaft, a frame supporting sai motor, a vertically swinging cutting mecha.- nism at one end ofand actuated by such end of said motor, and means for effecting opposite rectilinear bodily movements of said cutting mechanism and opposite swinging movements of said bar actuated by the opposite end of said motor and including a chain engaging sprocket rotatable on a vertical axis.

104. In a mining machine, a motor having a rotating shaft, a frame supporting said motor, a vertically swinging cutting mechanism at one end of and actuated b such end of said motor, and means for e ecting opposite rectilinear bodily movements of said cutting mechanism and opposite swinging movements of said bar actuated by the op- "posite end of said motor and including a chain engaging sprocket rotatable on a vertical axis and reverse bevels rotatable on a horizontal axis.

105. In a mining machine, a motor having arotating shaft, a frame supporting said motor, a vertically swinging cutting mechanism at one end of and actuated b such end of said motor, and means for e ecting opposite rectilinear bodily movements of said cutting mechanism and opposite swinging movements of said bar actuated by the o posite end of said motor and including a c ain engaging sprocket rotatable on a vertical axis and reverse 'bevels rotatable on a horizontal axis in a plane above said sprocket.

In testimony whereof I affix m s1 ature.

FRANK CAR LI GE.

tal axis parallel to the plane of bar swing and driving gearing therefor including reverse bevels coaxial therewith, a cutter chain on said bar, and power operated means for eiiecting' circulation of said cutter chain, all of said power operated means being selfcontained.

100. In a mining apparatus, a machine frame having a motor intermediate the ends thereof, cutting mechanism at one end of said frame including a horizontally pivoted cutter bar having orbitally movingA cutting elements, means actuated by one end of said motor for effecting orbital movement of sai-'1 cutting elements, and means actuated by the other end of said motor for effecting bar swing including a threaded member rotatable on a horizontal axis and self-locking power transmitting connections between the same and said bar.

101. In a mining apparatus, a machine frame having a motor intermediate the ends thereof, cutting mechanism at one end of said frame including a horizontally pivoted cutter bar having orbitally moving cutting elements` means actuated by one end of said motor for effecting orbital movement of said cutting elements, and means actuated by the other end of said motor for eiecting bar swing including a. threaded member rotatable on a horizontal axis extending longitudinally of the motor and self-locking power transmitting connections between the same and said bar.

102. In a mining machine, a motor hav-` posite end of said motor and including a iexible chain member for effecting the rectilinear bodily movements and gearing wholly independent of said chain member for effecting bar swing.

103. In a mining machine, a motor having a rotating shaft, a frame supporting said motor, a vertically swinging cutting mechanism at one end of and actuated by such end of said motor, and means for effecting opposite rectilinear bodily movements of said cutting mechanism and opposite swinging movements of said bar actuated by the opposite end of said motor and including a chain engaging sprocket rotatable on a vertical axls.

104. In a mining machine, a motor having a rotating shaft, a frame supporting said motor, a vertically swinging cutting mechanism at one end of and actuated b such end of said motor, and means for e ecting opposite rectilinear bodily movements of said cutting mechanism and opposite swinging movements of said bar actuated by the opposite end of said motor and including a chain engaging sprocket rotatable on a vertical axis and reverse bevels rotatable on a horizontal axis.

105. In a mining machine, a motor having a rotating shaft, a frame supporting said motor, a vertically swinging cutting mechanism at one end of and actuated by such end of said motor, and means for eil'ecting opposite rectilinear bodily movements of sald cutting mechanism and opposite swinging movements of said bar actuated by the opposite end of said motor and including a chain engaging sprocket rotatable on a vertical axis and reverse bevels rotatable on a horizontal axis in a plane above said sprocket.

In testimony whereof I aiiix m s1 nature.

FRANK CAR LI GE.

CERTIFICATE OF CORRECTION.

Patent No. l, 648, 876.

Granted November 8, 1927, to

FRANK CARTLIDGE.

It is hereby certi-fied that error appears in the printed specification of the above numbered patent requiring correction as follows: Page l, line 24, for the misspelled word "foreging" read "foregoing"; same page, line 89, before the word "bar" insert the word "cutter"; page 4, line 17, claim 5, and page 5,

, llne 40, claim 20, after the word "latter" insert a comma; page Spline 1.27, claim 28, after the word "latter" insert the words "and disposed longitudinally thereof"; page 6, line 40, claim 32, after the word "plane" and in line 106, claim 86, after the word "motor" strike out the "comma"; and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the ease in the Patent Office.

Signed and sealed this 17th day of January, A. D. 1928.

`Seal.

M. J. Moore, Acting Commissioner of Patents.

CERTIFICATE 0F CORRECTION.

Patent No. 1,648,876. Granted November 8, 1927, to

FRANK CARTLIDGE.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 1, line 24, for the misspelled word "foreging" read "foregoing"; same page, line 89, beforelthe word "bar" insert the word "cutter"; page 4, line 17, claim 5, and page 5, line 40, claim 20, after the word "latter" insert a comma; page 5,' line 127, claim 28, after the word "latter" insert the words "and disposed longitudinally thereof"; page 6, line 40, claim 32, after the word "plane" and in line 106, claim 36, after the word "motor" strike out the "comma"; and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 17th day of January, A. D. 1928.

M. J. Moore, Seal. Acting Commissioner of Patents; 

